A manufacturer claims that 80% of their products are defect-free. What is the probability that out of 100 randomly chosen products, exactly 75 are defect-free?
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What is the median of a set of numbers: 4, 5, 7, 9, 11?
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Math question: Use factoring and the distributive property to simplify the expression 3x^2 + 6x + 9.